1. Styling

Chris Bailiss

2019-03-21

In This Vignette

Quick Styling

This ‘Quick Start’ describes one easy method of styling table cells. A fuller explanation is given in the other sections of this vignette.

Cells in a table are styled using CSS. The quickest way to apply styles to individual cells in a table is using:

tbl$setStyling(rFrom, cFrom, rTo, cTo, cells, baseStyleName, style, declarations)

To apply styles to a single cell, e.g. at row 1, column 2:

tbl$setStyling(1, 2, declarations=list("font-weight"="bold", "text-align"="center")

To apply styles to a range of cells, e.g. rows 2 to 3 and columns 1 to 5:

tbl$setStyling(2, 1, 3, 5, declarations=list("font-weight"="bold", "text-align"="center")

The above sets CSS style attributes on the individual cells. This is quick and easy, though very verbose. Named styles are more efficient for large tables (hundreds/thousands of cells) and are described in the following sections.

Styles and Themes

basictabler can render tables to a few different formats. The focus of this vignette is styling when rendering to HTML.

When rendered to HTML, the appearance of basictabler tables can be changed using styles and themes:

The basictabler package is supplied with some basic themes. Additional themes can be defined.

In addition, for each cell in the table, a set of style overrides can be set. These are style declarations that apply to individual cells.

Styles and CSS

A style is a collection of name-value pairs. The name-value pairs used to specify styles are simply Cascading Style Sheet properties and values. A full introduction and reference for CSS can be found on the w3schools website.

An example of defining a basictabler style is:

tableStyles$addStyle(styleName="ColumnHeader", list(
    "font-family"="arial",
    "font-size"="0.75em",
    padding="2px",
    border="1px solid blue",
    "vertical-align"="middle",
    "text-align"="center",
    "font-weight"="bold",
    color="blue",
    "background-color"="#FFFFFF",
    "xl-wrap-text"="wrap"
  ))

When viewing tables in an IDE such as R Studio, then typically only one table is viewed at a time.

If multiple tables are being output together (e.g. into a single HTML page) then specifying a styleNamePrefix in the tbl$renderTable() call is needed. The CSS declarations generated by the basictabler package for each table will then not overlap with each other. This can be seen in all of the examples in this vignette.

XL Styles

The basictabler package also supports outputting to Excel files. The Excel output can use CSS styling and/or Excel specific styling. The Excel specific styles are defined alongside the CSS styles and start with “xl-”, e.g. see the example above. The Excel specific styles are ignored by the HTML output. For more details about the Excel export, see the Excel Export vignette.

Included Themes

The basictabler package includes three basic themes:

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- "default"  # this theme is already the default, so this line isn't really needed
tbl$renderTable(styleNamePrefix="t0")
# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- "compact"
tbl$renderTable(styleNamePrefix="t1")
# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- "largeplain"
tbl$renderTable(styleNamePrefix="t2")

Simple Themes

Simple themes can be defined using a list. Several examples are shown below.

# define the font and colours
simpleBlueTheme <- list(
  fontName="Verdana, Arial",
  headerBackgroundColor = "rgb(68, 114, 196)",
  headerColor = "rgb(255, 255, 255)",
  cellBackgroundColor = "rgb(255, 255, 255)",
  cellColor = "rgb(0, 0, 0)",
  totalBackgroundColor = "rgb(186, 202, 233)",
  totalColor = "rgb(0, 0, 0)",
  borderColor = "rgb(48, 84, 150)"
)

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- simpleBlueTheme
tbl$renderTable(styleNamePrefix="t3")
# define the colours
simpleGrayTheme <- list(
  fontName="Courier New, Courier",
  headerBackgroundColor = "rgb(128, 128, 128)",
  headerColor = "rgb(255, 255, 255)",
  cellBackgroundColor = "rgb(255, 255, 255)",
  cellColor = "rgb(0, 0, 0)",
  totalBackgroundColor = "rgb(192, 192, 192)",
  totalColor = "rgb(0, 0, 0)",
  borderColor = "rgb(64, 64, 64)"
)

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- simpleGrayTheme
tbl$renderTable(styleNamePrefix="t4")
# define the colours
simpleGreenTheme <- list(
  fontName="Helvetica, arial",
  headerBackgroundColor = "rgb(112, 173, 71)",
  headerColor = "rgb(255, 255, 255)",
  cellBackgroundColor="rgb(255, 255, 255)",
  cellColor="rgb(0, 0, 0)",
  totalBackgroundColor = "rgb(182, 216, 158)",
  totalColor="rgb(0, 0, 0)",
  borderColor = "rgb(84, 130, 53)"
)

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=FALSE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- simpleGreenTheme
tbl$renderTable(styleNamePrefix="t6")

Styling with the quick table functions

The following example defines a simple theme and supplies this to the quick table function to specify styling:

# aggregate the sample data to make a small data frame
library(basictabler)
library(dplyr)
tocsummary <- bhmsummary %>%
  group_by(TOC) %>%
  summarise(OnTimeArrivals=sum(OnTimeArrivals),
            OnTimeDepartures=sum(OnTimeDepartures),
            TotalTrains=sum(TrainCount)) %>%
  ungroup() %>%
  mutate(OnTimeArrivalPercent=OnTimeArrivals/TotalTrains*100,
         OnTimeDeparturePercent=OnTimeDepartures/TotalTrains*100) %>%
  arrange(TOC)

# column formats
columnFormats=list(NULL, list(big.mark=","), list(big.mark=","), list(big.mark=","), "%.1f", "%.1f")

# simple theme
simpleBlueTheme <- list(
  fontName="Verdana, Arial",
  headerBackgroundColor = "rgb(68, 114, 196)",
  headerColor = "rgb(255, 255, 255)",
  cellBackgroundColor = "rgb(255, 255, 255)",
  cellColor = "rgb(0, 0, 0)",
  totalBackgroundColor = "rgb(186, 202, 233)",
  totalColor = "rgb(0, 0, 0)",
  borderColor = "rgb(48, 84, 150)"
)

# headings in red text, cells in light gray
tbl <- qtbl(tocsummary, firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("TOC", "On-Time Arrivals", "On-Time Departures",
                                    "Total Trains", "On-Time Arrival %", "On-Time Departure %"),
            columnFormats=columnFormats, theme=simpleBlueTheme)

# render table
tbl$renderTable(styleNamePrefix="t9")

The next example demonstrates specifying more granular style settings when using a quick table function:

# aggregate the sample data to make a small data frame
library(basictabler)
library(dplyr)
tocsummary <- bhmsummary %>%
  group_by(TOC) %>%
  summarise(OnTimeArrivals=sum(OnTimeArrivals),
            OnTimeDepartures=sum(OnTimeDepartures),
            TotalTrains=sum(TrainCount)) %>%
  ungroup() %>%
  mutate(OnTimeArrivalPercent=OnTimeArrivals/TotalTrains*100,
         OnTimeDeparturePercent=OnTimeDepartures/TotalTrains*100) %>%
  arrange(TOC)

# column formats
columnFormats=list(NULL, list(big.mark=","), list(big.mark=","), list(big.mark=","), "%.1f", "%.1f")

# create the table
tbl <- qtbl(tocsummary, firstColumnAsRowHeaders=FALSE,
            explicitColumnHeaders=c("TOC", "On-Time Arrivals", "On-Time Departures",
                                    "Total Trains", "On-Time Arrival %", "On-Time Departure %"),
            columnFormats=columnFormats, 
            tableStyle=list("border-color"="maroon"),
            headingStyle=list("color"="cornsilk", "background-color"="maroon", 
                              "font-style"="italic", "border-color"="maroon"), 
            cellStyle=list("color"="maroon", "background-color"="cornsilk", 
                           "border-color"="maroon"))

# set column alignment of first column
tbl$setStyling(2, 1, 5, 1, declarations=list("text-align"="left"))

# render table
tbl$renderTable(styleNamePrefix="t10")

The quick table functions specify the same styling/formatting for all headers and all cells. To specify different styling/formatting for specific headings and/or specific rows/columns, use the more verbose syntax for creating the table as shown in the examples below.

Styling Rows/Columns/Cells

Specifying cell appearance while creating a table from a data frame

The following example defines a new style and uses this for one of the columns in the table, with the other columns using the normal cell style.

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)
df <- data.frame(saleIds, items, quantities, prices)
colNames <- c("Sale ID", "Item", "Quantity", "Price")
colFormats <- list(NULL, NULL, NULL, "%.2f")

# construct the table
library(basictabler)
tbl <- BasicTable$new()

# define a new style
tbl$addStyle(styleName="AltCell", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 8px",
  "border-bottom"="1px solid #9C0006",
  "text-align"="right",
  color="#9C0006",
  "background-color"="#FFC7CE"
))
colStyleNames <- c("Cell", "Cell", "AltCell", "Cell")

# populate the table
tbl$addData(df, explicitColumnHeaders=colNames, columnFormats=colFormats, baseStyleNames=colStyleNames)
tbl$renderTable(styleNamePrefix="t11")

Specifying cell appearance while creating a table column-by-column

It is also possible to define a new style for an entire column when creating a table column-by-column. In the example below a new style is created and this is used as the base style for the third column.

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()

# define a new style
tbl$addStyle(styleName="AltColumn", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 8px",
  "border-bottom"="1px solid #9C0006",
  "text-align"="right",
  color="#9C0006",
  "background-color"="#FFC7CE"
))
tbl$cells$setCell(1, 1, cellType="root", rawValue="Sale ID")
tbl$cells$setCell(1, 2, cellType="columnHeader", rawValue="Item")
tbl$cells$setCell(1, 3, cellType="columnHeader", rawValue="Quantity")
tbl$cells$setCell(1, 4, cellType="columnHeader", rawValue="Price")
tbl$cells$setColumn(1, cellTypes="rowHeader", rawValues=saleIds)
tbl$cells$setColumn(2, cellTypes="cell", rawValues=items)
tbl$cells$setColumn(3, cellTypes="cell", rawValues=quantities, baseStyleName="AltColumn")
tbl$cells$setColumn(4, cellTypes="cell", rawValues=prices,
                    formats=list("%.2f"))
tbl$renderTable(styleNamePrefix="t13")

Specifying cell appearance while creating a table row-by-row

Similarly, it is possible to define a new style for an entire row when creating a table row-by-row. In the example below a new style is created and this is used as the base style for the……

# cell types for the cells in each row
cellTypes <- c("rowHeader", "cell", "cell", "cell")

# formats for the values in each row
# (only the value in the fourth column needs formatting)
formats <- list(NULL, NULL, NULL, "%.2f")

# construct the table
library(basictabler)
tbl <- BasicTable$new()

# define a new style
tbl$addStyle(styleName="AltRow", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 8px",
  "border-bottom"="1px solid #9C0006",
  "text-align"="right",
  color="#9C0006",
  "background-color"="#FFC7CE"
))
tbl$cells$setCell(1, 1, cellType="root", rawValue="Sale ID")
tbl$cells$setCell(1, 2, cellType="columnHeader", rawValue="Item")
tbl$cells$setCell(1, 3, cellType="columnHeader", rawValue="Quantity")
tbl$cells$setCell(1, 4, cellType="columnHeader", rawValue="Price")
tbl$cells$setRow(2, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5334, "Apple", 5, 0.34452354))
tbl$cells$setRow(3, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5336, "Orange", 8, 0.4732543), baseStyleNames="AltRow")
tbl$cells$setRow(4, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5338, "Banana", 6, 1.3443243))
tbl$renderTable(styleNamePrefix="t14")

When creating tables column-by-column and row-by-row, it is possible to specify a vector for baseStyleNames of the same length as rawValues, to be able to specify different styles for each cell in the column/row:

# cell types for the cells in each row
cellTypes <- c("rowHeader", "cell", "cell", "cell")

# formats for the values in each row
# (only the value in the fourth column needs formatting)
formats <- list(NULL, NULL, NULL, "%.2f")

# construct the table
library(basictabler)
tbl <- BasicTable$new()

# define a new style
tbl$addStyle(styleName="AltRowLeftAlign", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 2px",
  "border-bottom"="1px solid #9C0006",
  "text-align"="left",
  color="#9C0006",
  "background-color"="#FFC7CE"
))
tbl$addStyle(styleName="AltRowRightAlign", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 8px",
  "border-bottom"="1px solid #9C0006",
  "text-align"="right",
  color="#9C0006",
  "background-color"="#FFC7CE"
))
styleNames <- c("AltRowLeftAlign", "AltRowRightAlign", 
                    "AltRowRightAlign", "AltRowRightAlign")
tbl$cells$setCell(1, 1, cellType="root", rawValue="Sale ID")
tbl$cells$setCell(1, 2, cellType="columnHeader", rawValue="Item")
tbl$cells$setCell(1, 3, cellType="columnHeader", rawValue="Quantity")
tbl$cells$setCell(1, 4, cellType="columnHeader", rawValue="Price")
tbl$cells$setRow(2, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5334, "Apple", 5, 0.34452354))
tbl$cells$setRow(3, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5336, "Orange", 8, 0.4732543), baseStyleNames=styleNames)
tbl$cells$setRow(4, cellTypes=cellTypes, formats=formats,
                 rawValues=list(5338, "Banana", 6, 1.3443243))
tbl$renderTable(styleNamePrefix="t15")

Specifying cell appearance while creating a table cell-by-cell

The following example shows two different ways of specifying cell styling whilst creating a table cell-by-cell. The first method defines an entirely new cell style (i.e. that is not part of the standard theming). This cell style is then used when styling one of the cells. The second method specifies one additional style declaration that is applied on top of the standard theming.

library(basictabler)
tbl <- BasicTable$new()

# specify a new cell style
tbl$addStyle(styleName="AltCell", list(
  "font-family"="Arial",
  "font-size"="0.8em",
  "font-weight"="bold",
  padding="2px 2px 2px 8px",
  "border"="2px solid #9C0006",
  "text-align"="right",
  color="#9C0006",
  "background-color"="#FFC7CE"
))

# build the table
tbl$cells$setCell(1, 1, cellType="root", rawValue="Sale ID")
tbl$cells$setCell(1, 2, cellType="columnHeader", rawValue="Item")
tbl$cells$setCell(1, 3, cellType="columnHeader", rawValue="Quantity")
tbl$cells$setCell(2, 1, cellType="rowHeader", rawValue=5334)
tbl$cells$setCell(2, 2, cellType="cell", rawValue="Apple")
tbl$cells$setCell(3, 1, cellType="rowHeader", rawValue=5336)
tbl$cells$setCell(3, 2, cellType="cell", rawValue="Orange")

# use the new style for the following cell (used instead of the theme styling)
tbl$cells$setCell(2, 3, cellType="cell", rawValue=5, baseStyleName="AltCell")

# specify an additional style declaration for the following cell (used on top of the theme styling)
tbl$cells$setCell(3, 3, cellType="cell", rawValue=8, styleDeclarations=list("background-color"="#FFFF00"))

# render the table
tbl$renderTable(styleNamePrefix="t12")

Changing styling/formatting after table creation using tbl$setStyling()

The individual cells in the table can have their appearance changed by retrieving the cell then applying a style to the cell. The example below shows two different ways of applying cells to an individual cell. These styles apply in addition to the styles coming from the underlying theme, e.g. highlighting a cell:

# define the colours
orangeColors <- list(
  headerBackgroundColor = "rgb(237, 125, 49)",
  headerColor = "rgb(255, 255, 255)",
  cellBackgroundColor = "rgb(255, 255, 255)",
  cellColor = "rgb(0, 0, 0)",
  totalBackgroundColor = "rgb(248, 198, 165)",
  totalColor = "rgb(0, 0, 0)",
  borderColor = "rgb(198, 89, 17)"
)

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
theme <- getSimpleColoredTblTheme(parentTable=tbl, colors=orangeColors, fontName="Garamond, arial")
tbl$theme <- theme

# apply an additional highlight to one cell (3rd row, 2nd column)
tbl$setStyling(3, 2, declarations=list("background-color"="#FFFF00"))

# apply an additional highlight to one cell (3rd row, 3rd column)
cellHighlight <- tbl$createInlineStyle(declarations=list("background-color"="#00FFFF"))
cell <- tbl$cells$getCell(3, 3)
cell$style <- cellHighlight

# render the table
tbl$renderTable(styleNamePrefix="t16")

In the example above, the default cell style from the theme is still applied. The highlight is applied in addition to the default styling. To stop the base styling being applied, create a new named style and set the baseStyleName property on the cell to the name of the new style.

The tbl$setStyling() function is used in the example above. This function has the following arguments:

The tbl$createInlineStyle() function is also used in the example above. This function creates a new unnamed style (that is not part of the table theme) and takes two arguments: baseStyleName specifies the name of the style that the new style will be based on (i.e. will have it’s style properties copied from) and declarations which specifies new/overriding style properties for the new style.

The lapply() function can be used to set the style for multiple cells to a new inline style:

# apply inline style to multiple cells
highlight <- tbl$createInlineStyle(declarations=list("background-color"="#FFCC66"))
cells <- tbl$getCells(specifyCellsAsList=TRUE, rowNumbers=c(1, 3))
lst <- lapply(cells, function(cell) {cell$style <- highlight})

For many more examples of styling parts of a table, see the Finding and Formatting vignette.

Creating a New Theme

Since a theme is a collection of styles, creating themes is relatively straightforward. The names of the styles are then assigned to the different types of cells within a table:

E.g. creating a custom theme that displays a mixture of bright colours (a rather ugly bubble-gum theme):

# define the theme and styles
createCustomTheme <- function(parentTable=NULL, themeName="myCustomTheme") {
  tableStyles <- TableStyles$new(parentTable=parentTable, themeName=themeName)
  # borders in purple
  tableStyles$addStyle(styleName="Table", list(
      "border-collapse"="collapse",
      "border"="2px solid #B28DFF"
    ))
  # column headings in pink
  tableStyles$addStyle(styleName="ColumnHeader", list(
      "font-family"="\"Courier New\", Courier, monospace",
      "font-size"="0.75em",
      "font-weight"="bold",
      padding="2px",
      "border"="2px solid #B28DFF",
      "vertical-align"="middle",
      "text-align"="center",
      "font-weight"="bold",
      color="#DB49AC",
      "background-color"="#FFCCF9",
      "xl-wrap-text"="wrap"
    ))
  # row headings in blue
  tableStyles$addStyle(styleName="RowHeader", list(
      "font-family"="\"Courier New\", Courier, monospace",
      "font-size"="0.75em",
      "font-weight"="bold",
      padding="2px 8px 2px 2px",
      "border"="1px solid #B28DFF",
      "vertical-align"="middle",
      "text-align"="left",
      "font-weight"="bold",
      color="#438EC8",
      "background-color"="#ACE7FF",
      "xl-wrap-text"="wrap"
    ))
  # cells in yellow
  tableStyles$addStyle(styleName="Cell", list(
      "font-family"="\"Courier New\", Courier, monospace",
      "font-size"="0.75em",
      padding="2px 2px 2px 8px",
      "border"="1px solid #B28DFF",
      "text-align"="right",
      color="#FF800D",
      "background-color"="#FFFFD1"
    ))
  # totals in orange
  tableStyles$addStyle(styleName="Total", list(
      "font-family"="\"Courier New\", Courier, monospace",
      "font-size"="0.75em",
      "font-weight"="bold",
      padding="2px 2px 2px 8px",
      "border"="1px solid rgb(84, 130, 53)",
      "text-align"="right",
      color="#3BC6B6",
      "background-color"="#BFFCC6"
    ))
  tableStyles$tableStyle <- "Table"
  tableStyles$rootStyle <- "ColumnHeader"
  tableStyles$rowHeaderStyle <- "RowHeader"
  tableStyles$colHeaderStyle <- "ColumnHeader"
  tableStyles$cellStyle <- "Cell"
  tableStyles$totalStyle <- "Total"
  return(invisible(tableStyles))
}

# data for the table
saleIds <- c(5334, 5336, 5338)
items <- c("Apple", "Orange", "Banana")
quantities <- c(5, 8, 6)
prices <- c(0.34452354, 0.4732543, 1.3443243)

# construct the table
library(basictabler)
tbl <- BasicTable$new()
tbl$addData(data.frame(saleIds, items, quantities, prices), 
            firstColumnAsRowHeaders=TRUE,
            explicitColumnHeaders=c("Sale ID", "Item", "Quantity", "Price"),
            columnFormats=list(NULL, NULL, NULL, "%.2f"))

# theme the table and render
tbl$theme <- createCustomTheme(tbl)
tbl$renderTable(styleNamePrefix="t8")

Summary of Styling Rules

basictabler styles cells using the following rules:

Styling Output

When rendering to HTML, two styles settings are written by basictabler in the HTML for each table cell:

HTML class attribute

Example: < td class=“StyleName” >

HTML style attribute

Example: < td style=“text-align:left;background-color:yellow;” >

The cell style override declarations (= the declarations of the inline style) are used as the value of the HTML style attribute for each cell.

Further Reading

The full set of vignettes is:

  1. Introduction
  2. Working with Cells
  3. Outputs
  4. Styling
  5. Finding and Formatting
  6. Shiny
  7. Excel Export